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Forum Discussion

dineshkumar1611's avatar
dineshkumar1611
Icon for Nimbostratus rankNimbostratus
Jun 22, 2018

High CPU in Analysis Plane

Analysis plane CPU is high at 100% while overall CPU is 26%. tmm.0 at 110%, pabnagd 91%, bd 90%. CPU9 is at high cpu almost 100%. We have ltm+asm running over BIG-IP 12.1.2 Build 0.93.249 Engineering...
application delivery
ASM Advanced WAF
LTM
AlgebraicMirror's avatar
AlgebraicMirror
Icon for Altostratus rankAltostratus
Nov 13, 2018

I did eventually figure this out. In my case, every spike in the "analysis plane" ended up being accounted for by someone running the APM "All Sessions" report for the last hour. We have so many sessions that running that report could spike the CPU. The solution for us to start doing this kind of analysis in Splunk (we already ship the logs there).

 

Based on this, I would guess you issue is caused by one of two things: running ASM reports, or ASM learning mode doing analysis on traffic.